Patents by Inventor Neil Greenham
Neil Greenham has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11883805Abstract: A catalytic composition for treating a NOx-containing exhaust gas, wherein the composition comprises a copper-substituted small-pore zeolite comprising: i) Ce and/or La in a total amount of about 5 to about 400 g/ft3; and ii) Nd and/or Nb in a total amount of about 5 to about 400 g/ft3.Type: GrantFiled: May 12, 2022Date of Patent: January 30, 2024Assignee: Johnson Matthey Public Limited CompanyInventors: Daniel Avis, Yannick Bidal, Alexander Nicholas Michael Green, Neil Greenham, Matthew Eben Harris
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Patent number: 11826739Abstract: The present disclosure relates to a method for forming a catalyst article comprising: (a) forming a plastic mixture having a solids content of greater than 50% by weight by mixing together a crystalline small pore or medium pore molecular sieve in an H+ or NH4+ form, an insoluble active metal precursor, an inorganic matrix component, an organic auxiliary agent, an aqueous solvent and optionally inorganic fibres; (b) moulding the plastic mixture into a shaped article; and (c) calcining the shaped article to form a solid catalyst body. The present disclosure further relates to a catalyst article, particularly a catalyst article which is suitable for use in the selective catalytic reduction of nitrogen oxides, and to an exhaust system.Type: GrantFiled: April 30, 2021Date of Patent: November 28, 2023Inventors: Nikki Jane Amos-Reichert, Daniel Avis, Juergen Bauer, Yannick Bidal, Guy Richard Chandler, Alexander Nicholas Michael Green, Neil Greenham, Matthew Eben Harris, Sofia Lopez-Orozco, Joerg Werner Muench, Paul Richard Phillips, Irene Piras
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Publication number: 20230347326Abstract: A method of treating exhaust gas from a lean burn internal combustion engine is disclosed. The method comprises: introducing ammonia or an ammonia precursor into the exhaust gas upstream of an Fe-SCR catalyst, the Fe-SCR catalyst comprising iron and a zeolite; and contacting the exhaust gas with the Fe-SCR catalyst; wherein the amount of ammonia or ammonia precursor introduced into the exhaust gas upstream of the Fe-SCR catalyst is controlled to provide an ammonia-to-NOx molar ratio (ANR) in the exhaust gas contacting the Fe-SCR catalyst of from greater than 2 to 6.Type: ApplicationFiled: April 17, 2023Publication date: November 2, 2023Inventors: Daniel AVIS, Rafal BARAN, Gavin BROWN, Alexander GREEN, Neil GREENHAM, Matthew HARRIS, Oliver HEMMING, Carmelo IACONO, Caitlin JENKINS, Alanna MURPHY, Paul PHILLIPS
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Patent number: 11779913Abstract: The invention relates to a catalytic article comprising a substrate having an inlet and an outlet; a first coating comprising a blend of: (1) platinum on a support, and (2) a first SCR catalyst; and a second coating comprising a second SCR catalyst; wherein the support comprises at least one of a zeolite or a SiO2—Al2O3 mixed oxide. The platinum may be fixed on the support in solution.Type: GrantFiled: March 14, 2019Date of Patent: October 10, 2023Inventors: Hai-Ying Chen, Joseph Fedeyko, Neil Greenham, Matthew Harris, Jing Lu, Yannick Bidal
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Patent number: 11712685Abstract: The invention relates to a catalytic article comprising a substrate having an inlet and an outlet; a first coating comprising a blend of: (1) platinum on a support, and (2) a first SCR catalyst comprising a Cu- and Mn-exchanged molecular sieve; and a second coating comprising a second SCR catalyst; wherein the support comprises at least one of a zeolite or a SiO2-Al2O3 mixed oxide. The platinum may be fixed on the support in solution.Type: GrantFiled: March 25, 2021Date of Patent: August 1, 2023Assignee: Johnson Matthey Public Limited CompanyInventors: Yannick Bidal, Hai-Ying Chen, Joseph Fedeyko, Neil Greenham, Matthew Harris, Jing Lu
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Publication number: 20230211323Abstract: A composite, zone-coated, dual-use ammonia (AMOX) and nitric oxide oxidation catalyst (12) comprises: a substrate (5) having a total length L and a longitudinal axis and having a substrate surface extending axially between a first substrate end (I) and a second substrate end (O); two or more catalyst washcoat zones (1; 2) comprised of a first catalyst washcoat layer (9) comprising a refractory metal oxide support material and one or more platinum group metal components supported thereon and a second catalyst washcoat layer (11) different from the first catalyst washcoat layer (9) and comprising a refractory metal oxide support material and one or more platinum group metal components supported thereon, which two or more catalyst washcoat zones (1; 2) being arranged axially in series on and along the substrate surface, wherein a first catalyst washcoat zone (1) having a length L1, wherein L1<L, is defined at one end by the first substrate end (I) and at a second end (13) by a first end (15) of a second catalType: ApplicationFiled: October 16, 2020Publication date: July 6, 2023Inventors: Andrew Francis CHIFFEY, Kieran COLE, Oliver COOPER, Christopher DALY, Jonas EDVARDSSON, Lee GILLBERT, Alexander GREEN, Neil GREENHAM, Robert HANLEY, Caitlin Lucy JENKINS, Per MARSH, David MICALLEF, Francois MOREAU, George PLATT, Paul Richard PHILLIPS, James WYLIE
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Publication number: 20230130212Abstract: Catalyst compositions and methods of preparation comprising: preparing a promoter metal-molecular sieve catalyst composition comprising a promoter metal and a molecular sieve; and incorporating an iron salt into the promoter metal-molecular sieve catalyst composition.Type: ApplicationFiled: October 20, 2022Publication date: April 27, 2023Inventors: Daniel Robert AVIS, Gavin BROWN, Alba CASTANON RODRIGUEZ, Alexander Nicholas Michael GREEN, Neil GREENHAM, Matthew Eben HARRIS, Oliver HEMMING, Carmelo IACONO, Caitlin Lucy JENKINS, Alanna Susan MURPHY, Paul Richard PHILLIPS
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Publication number: 20230035318Abstract: A catalytic article for treating exhaust gas comprising: a substrate comprising an inlet end and an outlet end with an axial length L; a first catalytic region comprising a first platinum group metal (PGM) component and a support; a second catalytic region comprising a second PGM component on a support with low ammonia storage and a first SCR catalyst; and wherein the first catalytic region is covered by at least another catalytic region.Type: ApplicationFiled: December 10, 2020Publication date: February 2, 2023Inventors: Alexander Nicholas GREEN, Neil GREENHAM, Matthew Eben HARRIS
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Publication number: 20220362753Abstract: A catalytic composition for treating a NOx-containing exhaust gas, wherein the composition comprises a copper-substituted small-pore zeolite comprising: i) Ce and/or La in a total amount of about 5 to about 400 g/ft3; and ii) Nd and/or Nb in a total amount of about 5 to about 400 g/ft3.Type: ApplicationFiled: May 12, 2022Publication date: November 17, 2022Inventors: Daniel AVIS, Yannick BIDAL, Alexander Nicholas Michael GREEN, Neil GREENHAM, Matthew Eben HARRIS
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Publication number: 20210379576Abstract: The present disclosure relates to a method for forming a catalyst article comprising: (a) forming a slurry having a solids content of up to 50 wt % by mixing together at least the following components a crystalline molecular sieve in an H+ or NH4+ form, an insoluble active metal precursor and an aqueous solvent at a temperature in the range 10 to 35° C.; (b) coating a substrate with the slurry formed in step (a); and (c) calcining the coated substrate formed in step (b) to form a catalyst layer on the substrate. The present disclosure further relates to a catalyst article, particularly a catalyst article which is suitable for use in the selective catalytic reduction of nitrogen oxides, and to an exhaust system.Type: ApplicationFiled: May 26, 2021Publication date: December 9, 2021Inventors: Nikki Jane AMOS-REICHERT, Daniel AVIS, Juergen BAUER, Yannick BIDAL, Guy Richard CHANDLER, Alexander Nicolas Michael GREEN, Neil GREENHAM, Matthew Eben HARRIS, Sofia LOPEZ-OROZCO, Joerg MUENCH, Paul Richard Phillips, Irene PIRAS
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Publication number: 20210339234Abstract: The present disclosure relates to a method for forming a catalyst article comprising: (a) forming a plastic mixture having a solids content of greater than 50% by weight by mixing together a crystalline small pore or medium pore molecular sieve in an H+ or NH4+ form, an insoluble active metal precursor, an inorganic matrix component, an organic auxiliary agent, an aqueous solvent and optionally inorganic fibres; (b) moulding the plastic mixture into a shaped article; and (c) calcining the shaped article to form a solid catalyst body. The present disclosure further relates to a catalyst article, particularly a catalyst article which is suitable for use in the selective catalytic reduction of nitrogen oxides, and to an exhaust system.Type: ApplicationFiled: April 30, 2021Publication date: November 4, 2021Inventors: Nikki Jane AMOS-REICHERT, Daniel AVIS, Juergen BAUER, Yannick BIDAL, Guy Richard CHANDLER, Alexander Nicholas Michael GREEN, Neil GREENHAM, Matthew Eben HARRIS, Sofia LOPEZ-OROZCO, Joerg Werner MUENCH, Paul Richard PHILLIPS, Irene PIRAS
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Publication number: 20210299643Abstract: The invention relates to a catalytic article comprising a substrate having an inlet and an outlet; a first coating comprising a blend of: (1) platinum on a support, and (2) a first SCR catalyst comprising a Cu- and Mn-exchanged molecular sieve; and a second coating comprising a second SCR catalyst; wherein the support comprises at least one of a zeolite or a SiO2-Al2O3 mixed oxide. The platinum may be fixed on the support in solution.Type: ApplicationFiled: March 25, 2021Publication date: September 30, 2021Inventors: Yannick BIDAL, Hai-Ying CHEN, Joseph FEDEYKO, Neil GREENHAM, Matthew HARRIS, Jing LU
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Patent number: 11000838Abstract: A catalytic article for treating an exhaust gas stream containing particulate matter, hydrocarbons, CO, and ammonia, the article may include: (a) a substrate having an inlet end and an outlet end defining an axial length; (b) a first catalyst coating including: 1) a platinum group metal distributed on a molecular sieve, and 2) a base metal distributed on a molecular sieve; and (c) a second catalyst coating including: 1) a platinum group metal distributed on a molecular sieve, and 2) a base metal distributed on a molecular sieve.Type: GrantFiled: December 6, 2019Date of Patent: May 11, 2021Inventors: Neil Greenham, Jing Lu, Andrew Newman
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Patent number: 10828603Abstract: A catalyst article including a substrate with an inlet end and an outlet end, a first zone and a second zone, where the first zone comprises: a) an ammonia slip catalyst (ASC) bottom layer comprising a platinum group metal on a support; and b) an SCR layer comprising a second SCR catalyst, the SCR layer located over the ASC bottom layer; where the second zone comprises a catalyst (“second zone catalyst”) selected from the group consisting of a diesel oxidation catalyst (DOC) and a diesel exotherm catalyst (DEC); wherein the ASC bottom layer extends into the second zone; and where the first zone is located upstream of the second zone. The ASC bottom layer may include a blend of: (1) the platinum group metal on a support and (2) a first SCR catalyst.Type: GrantFiled: March 29, 2018Date of Patent: November 10, 2020Assignee: Johnson Matthey Public Limited CompanyInventors: Hai-Ying Chen, Joseph Michael Fedeyko, Neil Greenham, Mikael Larsson, Jing Lu, Per Marsh, David Micallef, Andrew Newman
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Patent number: 10799832Abstract: A catalyst article for treating a flow of a combustion exhaust gas comprises: a catalytically active substrate comprising one or more channels extending along an axial length thereof through which, in use, a combustion exhaust gas flows, the one or more channels having a first surface for contacting a flow of combustion exhaust gas; wherein the substrate is formed of an extruded vanadium-containing SCR catalyst material, wherein a first layer is provided on at least a portion of said first surface, wherein the first layer comprises an ammonia slip catalyst composition comprising one or more platinum group metals supported on titania, a silica-titania mixed oxide, a Ce—Zr mixed oxide, or a mixture thereof, and a second layer is provided on at least a portion of the first layer and comprises an SCR catalyst composition.Type: GrantFiled: March 26, 2018Date of Patent: October 13, 2020Assignee: Johnson Matthey Public Limited CompanyInventors: Heledd Howells, David Micallef, Andrew Newman, Neil Greenham
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Publication number: 20200215520Abstract: A catalytic article for treating an exhaust gas stream containing particulate matter, hydrocarbons, CO, and ammonia, the article may include: (a) a substrate having an inlet end and an outlet end defining an axial length; (b) a first catalyst coating including: 1) a platinum group metal distributed on a molecular sieve, and 2) a base metal distributed on a molecular sieve; and (c) a second catalyst coating including: 1) a platinum group metal distributed on a molecular sieve, and 2) a base metal distributed on a molecular sieve.Type: ApplicationFiled: December 6, 2019Publication date: July 9, 2020Inventors: Neil GREENHAM, Jing LU, Andrew NEWMAN
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Patent number: 10500571Abstract: A catalytic article for treating an exhaust gas stream containing particulate matter, hydrocarbons, CO, and ammonia, the article may include: (a) a substrate having an inlet end and an outlet end defining an axial length; (b) a first catalyst coating including: 1) a platinum group metal distributed on a molecular sieve, and 2) a base metal distributed on a molecular sieve; and (c) a second catalyst coating including: 1) a platinum group metal distributed on a molecular sieve, and 2) a base metal distributed on a molecular sieve.Type: GrantFiled: March 28, 2018Date of Patent: December 10, 2019Assignee: Johnson Matthey Public Limited CompanyInventors: Neil Greenham, Jing Lu, Andrew Newman
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Publication number: 20190283011Abstract: The invention relates to a catalytic article comprising a substrate having an inlet and an outlet; a first coating comprising a blend of: (1) platinum on a support, and (2) a first SCR catalyst; and a second coating comprising a second SCR catalyst; wherein the support comprises at least one of a zeolite or a SiO2—Al2O3 mixed oxide. The platinum may be fixed on the support in solution.Type: ApplicationFiled: March 14, 2019Publication date: September 19, 2019Inventors: Hai-Ying CHEN, Joseph FEDEYKO, Neil GREENHAM, Matthew HARRIS, Jing LU
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Publication number: 20180280945Abstract: A catalytic article for treating an exhaust gas stream containing particulate matter, hydrocarbons, CO, and ammonia, the article may include: (a) a substrate having an inlet end and an outlet end defining an axial length; (b) a first catalyst coating including: 1) a platinum group metal distributed on a molecular sieve, and 2) a base metal distributed on a molecular sieve; and (c) a second catalyst coating including: 1) a platinum group metal distributed on a molecular sieve, and 2) a base metal distributed on a molecular sieve.Type: ApplicationFiled: March 28, 2018Publication date: October 4, 2018Inventors: Neil GREENHAM, Jing LU, Andrew NEWMAN
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Publication number: 20180280877Abstract: A catalyst article including a substrate with an inlet end and an outlet end, a first zone and a second zone, where the first zone comprises: a) an ammonia slip catalyst (ASC) bottom layer comprising a platinum group metal on a support; and b) an SCR layer comprising a second SCR catalyst, the SCR layer located over the ASC bottom layer; where the second zone comprises a catalyst (“second zone catalyst”) selected from the group consisting of a diesel oxidation catalyst (DOC) and a diesel exotherm catalyst (DEC); wherein the ASC bottom layer extends into the second zone; and where the first zone is located upstream of the second zone. The ASC bottom layer may include a blend of: (1) the platinum group metal on a support and (2) a first SCR catalyst.Type: ApplicationFiled: March 29, 2018Publication date: October 4, 2018Inventors: Hai-Ying CHEN, Joseph Michael FEDEYKO, Neil GREENHAM, Mikael LARSSON, Jing LU, Per Marsh, David MICALLEF, Andrew Newman